Double Slope Desalination

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Experimental and Theoretical Analysis on Double Slope Solar Still using Copper Floating Plates Manikandan.D1, Selvendiran.R1, Suresh Babu.K2a, Sridharan.M2b 1 Department of Mechanical Engineering, Saranathan College of Engineering Panjapur, Trichirapalli-620012, India 2a Asst.Professor, Department of Mechanical Engineering, Mookambigai College of Engineering ,Pudukottai-622502, India 2b Asst.Professor, Department of Mechanical Engineering, Saranathan College of Engineering ,Trichirapalli-620012, India Corresponding Author E-mail Abstract— Solar Desalination is a traditional method of converting brackish water into potable water. The idea here is brought out with some innovative technique…show more content…
To attain this, there are several concepts were followed. Single Slope, Double Slope desalination is more common among them. In order to improve the quantity & quality (pH value, taste, odor) of the water produced various method of implementation is studied. Preheating of water, adding of heat storage elements and adding of catalysts are the various methods. To obtain a conclusion on best water yielding methodology various comparative studies on different channel in double is studied. Solar desalination is a concept of using solar energy as a basic source of energy without using artificial source as input.The experimental goes with three way process. 1.Absorption 2.Evaporation 3.Condensation First the sunlight enters into the setup and the energy is absorbed by the basin and the water inside the basin (absorption).Second the water get vapourised as it absorbs heat from incoming solar radiation (evaporation).Third the water vapourised get condensed into small drops as the glass plate plays as a hurdle to the vapourised water and vapour is converted into water droplet (Condensation).The output of the experiment is the condensed droplet of the water at the 3rd process condensation of 3 way process and it is collected in a separate outlet tube. II. AIM OF THE…show more content…
(7) the following assumptions have been made: The time interval Δt (0<t<Δt) is small. The function f (t) is constant, i.e. for the time interval Δt, and ‘a’ is constant during the time interval Δt. The internal convective (hcw), evaporative (hew) and radiative (hrw) heat transfer coefficients for east and west condensing cover have been evaluated at initial (t=0) water (Tw0) and inner condensing cover (Tci0) temperature and assumed to be constant over 0-t time interval. Hence, hte and htw have been considered constant over 0-t time interval. After making the above assumptions, Eq. (7) becomes first order simple differential equation. The solution of Eq. (7) with initial condition, Tw = Tw0 at t=0, becomes And inner and outer glass cover temperatures obtained from Eqs. (1) – (6) are: …... (9a) …… (9b) The obtained values of water and inner condensing cover temperature become initial temperature for next set of calculations. Similarly this procedure has been adopted for other set of time

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